i've seen a circuit online that allows the arduino to interface with with a computer as if it were a usb keyboard. the source code was easy enough to find but the schematic for the shield (which looks brutally simple) is really hard to find. does anyone have this schematic or know how to connect it? so far the only source i've found for the schematic is a book called "practical arduino" which will set me back $30! here's the info i've found on it so far